20146 月8
Nutz：下载文件（输出文件）
HSSFWorkbook wb = new HSSFWorkbook();
OutputStream out = new FileOutputStream(“x.xls”);
wb.write(out);
out.close();
return new File(“x.xls”);
ByteArrayOutputStream out = new ……..;
wb………
out.close();
ByteArrayInputStream in = new ………..(out.toByte…);
return in;
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